n=int(input())

if n<600:
    print(8)
    exit()
    
if n<800:
    print(7)
    exit()
    
if n<1000:
    print(6)
    exit()
    
if n<1200:
    print(5)
    exit()
    
if n<1400:
    print(4)
    exit()
    
if n<1600:
    print(3)
    exit()
    
if n<1800:
    print(2)
    exit()
    
if n<2000:
    print(1)
    exit() n=int(input()) n int(input()) int input() input if n<600:
    print(8)
    exit()
     n<600 n 600 print(8) print 8 exit() exit if n<800:
    print(7)
    exit()
     n<800 n 800 print(7) print 7 exit() exit if n<1000:
    print(6)
    exit()
     n<1000 n 1000 print(6) print 6 exit() exit if n<1200:
    print(5)
    exit()
     n<1200 n 1200 print(5) print 5 exit() exit if n<1400:
    print(4)
    exit()
     n<1400 n 1400 print(4) print 4 exit() exit if n<1600:
    print(3)
    exit()
     n<1600 n 1600 print(3) print 3 exit() exit if n<1800:
    print(2)
    exit()
     n<1800 n 1800 print(2) print 2 exit() exit if n<2000:
    print(1)
    exit() n<2000 n 2000 print(1) print 1 exit() exit n=int(input()) int(input()) n
n=int(input())

if n<600:
    print(8)
    exit()
    
if n<800:
    print(7)
    exit()
    
if n<1000:
    print(6)
    exit()
    
if n<1200:
    print(5)
    exit()
    
if n<1400:
    print(4)
    exit()
    
if n<1600:
    print(3)
    exit()
    
if n<1800:
    print(2)
    exit()
    
if n<2000:
    print(1)
    exit()